This person also has more of a criminal history than they let on, being convicted in the 2000's decade and having arrests and charges even up to 2018, some of them for things like DV, making threats, drug/weapon possession, and driving without a valid license, although on the more recent ones they may have been found not guilty.

Your date you closed on the house and took possession will be your determining factor and not when you lived there in the RV.  

I also possess a great ‘bs’ detector.  ;-)

They had left it unlocked, vacant, with the keys inside since they took possession 5-6 months prior.

The room is occupied with their possessions correct? 

@Sam BrownWhen a person with a reverse mortgage passes, the mortgage becomes due in full.If the house passed onto heirs, they have about 1 year before the lender takes possession of the house.

Unfortunately, eviction (unlawful detainer motion) is the only way for a landlord to regain possession of a property when a tenant refuses to leave voluntarily. 

I am also thrilled to get possession mid month.  

There's a major street in this area where the city has taken possession of long stretches with plans to redevelop it.

@Cody L. fairly certain the state of CA will shut down folks for advertising homes they don't own. there is a link right on the website.. and there was a module about it when I did my CA brokers CE.regardless if its good or bad to license real estate it is the law.. for most folks the real estate is the most significant possession or investment... so some regulation is warranted.you need a medical license, a license to practice law, a license to do tax's , a license to fly a plane, a license to drive a car..